Improvement in plows



J.-T. HOVIS.

Improvement in Plows.

No. 130,717. Y Patented Aug.,20,1872.

WITNESSES V INVENTQBZ All P/YOTH'L/THHGRAP/l/L WM )1 [0580/14 53PROCESS.)

.J N I'IED STATES PATENT OFFICE.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 130,717. dated August20, 1872.

Specification describing a certain Improvement in Draft Attachments forPlows, invented by JOHN T. HOVIS, of (llintonville,Ven-ango county andState of Pennsylvania.

The object of this invention is to render possible the shifting atpleasure of the draft of a plow when plow ng up or down hills, raisingthe point of draft when descending, and lowering it when ascending,without stopping the team. The invention consists in an arrangement ofparts whereby a plate with which the ring that the team is attached tois connected is made movable up and down in 'the clevis at the front endof the plow beam, and can be fastened at any particular point.

Figure l isan elevation of one side of the I which the whiffletrec isattached. A link, 0,

connects the top of the plate a with the front corner of a triangularframe, f, which is pivoted at its rear corner to a lug springing fromthe upper branch of the clevis. The third or upper corner of the frame fis connected, by a bar, g, with a lever, h, pivoted to the side of thebeam near the rear end thereof. This lever has a tooth, h, formed on oneside of it, which tooth engages with a ratchet-bar',i,that is supportedin a nearly horizontal position by fastening to the handle I, at itsrear end, and at its front end to an arm, m,that springs from theplow-beam. The lever h is kept in en gagement with the ratchet-bar by aspring, a, fastened at its lower end to the lever, and bearing againstthe inner side of a rail, 0, placed parallel to the bar 1', and fastenedto it at its ends.

The plowman, by passing the spring at and lever h together, can separatethe lever from the ratchet-bar, and can then move the lever backward orforward, as may be necessary, to raise or lower the plate 0, through themedium of the frame f, link 0, and connecting-rod g. Thus the draft canbe altered without stopping the team. On releasing the springn it immediately throws the lever h back into engagement with the ratchet-bar.

I claim as my invention The combination of the plate 0, link 0,triangular frame f, connecting-bar g, lever h, with a plow-beam andclevis, all arranged and operating as described.

JOHN T. HQVIS.

Witnesses:

JOHN H. KELLY, R. SURRENOEL-

